J/ApJ/678/102ivo://CDS.VizieR/J/ApJ/678/102doi:10.26093/cds/vizier.16780102CDSAjello M.Greiner J.Kanbach G.Rau A.Strong A.W.Kennea J.A.2009-11-28T16:01:15Z2009-11-28T16:53:25ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frsurveysx-ray-sourcesactive-galactic-nucleiWe applied the maximum likelihood (ML) method, as an image reconstruction algorithm, to the BAT (Burst Alert Telescope) X-Ray Survey (BXS). This method was specifically designed to preserve the full statistical information in the data and to avoid mosaicking of many exposures with different pointing directions, thus reducing systematic errors when co-adding images. We reconstructed, in the 14-170keV energy band, the image of a 90x90deg^2^ sky region, centered on (RA, DE)=(105{deg}, -25{deg}), which BAT surveyed with an exposure time of ~1Ms (in 2005 November). The best sensitivity in our image is ~0.85mCrab or 2.0x10^-11^ergs/cm^2^. We detect 49 hard X-ray sources above the 4.5{sigma} level; of these, only 12 were previously known as hard X-ray sources (>15keV). Swift XRT observations allowed us to firmly identify the counterparts for 15 objects, while 2 objects have Einstein IPC counterparts (Harris et al., 1990, in Imaging X-Ray Astronomy. A Decade of Achievements, ed. M. Elvis (Cambridge: Cambridge Univ. Press), 309); in addition to those, we found a likely counterpart for 13 objects by correlating our sample with the ROSAT All-Sky Survey Bright Source Catalog (Voges et al., 1999, Cat. <IX/10>). Seven objects remain unidentified.2008ApJ...678..102Ahttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/678/102CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJ/633/L77 : SWIFT/BAT detections of AGN (Markwardt+, 2005)J/ApJ/673/96 : BAT X-ray Survey - III (Ajello+, 2008)J/ApJ/681/113 : a fairehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/678/102https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/678/102http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/678/102https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/678/102https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/678/102http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/678/102GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/678/102/table4 (Detected hard X-ray sources)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/678/102/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/678/102/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/678/102/table4?GETtext/xml+votable180.050000true61.91783.65170.005555555555555556Swift6/4327 4488 20489 20618 20624 20657 20750 21036 21450 21553 21785 21996 22357 22464 22890 22912 23167 23323 24118 24120 27382 33094 33801 33866 33930 34104 34242 34264 34294 37650 37732 38653 39235 39295 39349 39778 39886 39889 39909 39977 40221 40432 40818 40838https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/678/102?format=asciiX-raydefaultJ/ApJ/678/102/table4Detected hard X-ray sourcesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSWIFTSwift identification (JHHMM.m+DDMM)meta.id;meta.maincharRAJ2000Right Ascension in degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in degrees (J2000)degpos.eq.dec;meta.mainFluxObserved flux (14-170keV) (10-11erg/cm2/s)1e-14W.m**-2phot.flux;em.X-rayfloatS/NSignal-to-Noise ratiostat.snrfloatExpExposure time100kstime.duration;obs.exposureintOIDCounterpart identificationmeta.id.crosscharf_OID[b] Source identified from ROSAT (1)meta.codecharOff? Offset from Swift and other identification positionsarcminpos;arith.difffloatnullableTypeSource typesrc.classcharCatCatalog/Instrument used for identification (2)instr.setupcharn_Cat[cde] Notes about associations (3)meta.notecharRAX? X-ray telescope (XRT) Right Ascension (J2000)pos.eq.ranullableDEX? X-ray telescope (XRT) Declination (J2000)pos.eq.decnullableRefReference code for XRT position (4)meta.notechar